I like to ad a plugin at this page: "waue_sendmail_1.php" the page that CSSFB createswhen ading the email-text via DW.
When the wizzard opens, down in the window I can choose, Editor or Dreamweaver. I choose DW and that page "waue_sendmail_1" opens to create my email text. (see image 1 the little green DW button).
And there I like to ad a plug in with my designd email-text, so I can change it without opening the email wizzard again.